Solved

java function not found

Posted on 1998-08-24
2
162 Views
Last Modified: 2013-11-23
I wrote this litte program. I compiled it and every time i try to run this applet i get the following
message:
Info :java.lang.NoSuchMethodError: java.awt.Component: method enableEvents(J)V not found

Can you please tell me why?



import java.awt.*;
import java.awt.event.*;
import java.applet.*;

class Blatt
extends Canvas
{

  private boolean clicked;
  private Point Position;

  public Blatt()
   { this.Position.x = 20;
     this.Position.y = 20;
     this.clicked = false;
     enableEvents(AWTEvent.MOUSE_EVENT_MASK);
   }

   public Blatt(Point Punkt)
   {
      this.Position = Punkt;
      this.clicked = false;
      enableEvents(AWTEvent.MOUSE_EVENT_MASK);
   }

   public void paint(Graphics g)
   {
     if(!this.clicked)
      g.drawRect(this.Position.x,this.Position.y,20,20);
     else
     {
       g.fillRect(this.Position.x,this.Position.y,20,20);
     }
   }

     protected void processMouseEvent(MouseEvent event)
   {

      if (event.getID() == MouseEvent.MOUSE_PRESSED)
        {
         if (clicked) clicked = false ;
           else
            clicked = true;

        }
         repaint();

      super.processMouseEvent(event);
   }
}


public class BrainApplet extends Applet
{

       public void init()
       {
        Blatt b = new Blatt();
        add(b);
        validate();
       }

        public void paint(Graphics g)
         {
             g.drawString("Welcome to this tutorial! Value ", 20, 20);
         }

}


0
Comment
Question by:stephan papadakis
2 Comments
 

Author Comment

by:stephan papadakis
ID: 1222459
Edited text of question
0
 
LVL 5

Accepted Solution

by:
msmolyak earned 50 total points
ID: 1222460
Most likely you are running your applet in non-JDK 1.1 compatible version of Navigator. To make sure that your applet is correct, try running in appletviewer. If it works fine and you indeed were using Netscape, get a latest version of communicator or download a JDK 1.1 patch for your version. You can find then in Java are on http://developer.netscape.com.

Let me know if you need more information.
0

Featured Post

What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
groupSum5 challenge 5 84
starter POM and spring-boot-starter,  spring-boot-web 2 54
tomcat administrtor 12 47
mysql jsp example issue 32 36
Java had always been an easily readable and understandable language.  Some relatively recent changes in the language seem to be changing this pretty fast, and anyone that had not seen any Java code for the last 5 years will possibly have issues unde…
Introduction Java can be integrated with native programs using an interface called JNI(Java Native Interface). Native programs are programs which can directly run on the processor. JNI is simply a naming and calling convention so that the JVM (Java…
This tutorial covers a practical example of lazy loading technique and early loading technique in a Singleton Design Pattern.
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …

777 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question